Tiltable furnace



Dec. 1s, 1928. `1,695,863

' G. SCHMITT TLTABLE FURNACE Filed Feb. 16, 1927 AToRNEY Patented Bec. 18, i928.

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GEORG.- SCHMITT, OF N'UREMBERG,

TREC @L MANUFACTURING COMPANY,

GERMANY,1ASSIGNOR TO WESTINGI-OUSE ELEC- A CORPORATION OF PENNSYLVANIA.

TILTABLE FURNACE.

Application filed February 16, 1927, Serial My invention relates to melting furnaces and particularly to that type of furnace which is tiltable to discharge the molten niaterial.

An object of my invention is to provide an electric furnace wherein the discharge of the molten material is facilitated.

Another object of my invention is to provide a tilting furnace that shall require a relatively small amount of power to tilt the same. u I

In practicin T my invention, l provide an electric furnace of the resistor type mounted upon a Supporting base for l d movement in a horizontal plane and tilting movement about a horizontal airis substantially coincidentwith its center of gravity. Upon the base, I further provide a substantially vertical channel member which cooperates with a roller mounted upon the furnace casing to guide a portion of the periphery of said casing, preferably the discharge spout,

in a vertical path when the furnace is tilted. n

In the drawing, Fig. l is a view, in end elevation, of al furnace embodying my invention;

Fig. 2 is a view, in side elevation, thereof;

Fig. 3 is a detailed View showing the construction of the guide roller; and

Fig. 4 is a section taken on the line IV-IV of Fig. 2.

In the drawing 10-11 designate vertically disposed supporting members spaced at their top and bottom by braces 12-13. These supports include substantially fiat horizontal bearing surfaces 14 with abutments 15 at one end thereof, and vertically disposed channel members 16.

The furnace comprises a chamber 20 surrounded by a resistor 18 and suitable refractory material 19, all contained'within a casing 24. A discharge passage 22 extends from the chamber of the furnace through the refractory material andterminates in a discharge spout 26 on the periphery of the casing. A charging opening for the chamber 20 is indicated at 28 and is closed by a door 8O operable by means of levers 32, 86 and 84, and a counterweight 85. Upon the ends of the casing and located on a horizontal lineI extending through the center of gravity thereof are trunnions 36 upon which are mounted rollers 88 provided with outer flanges 40.

The furnace -is mounted betweenv the vsup- No. 168,591, and in Germany April 20, 1926.

ports 1|011 with the rollers 88 riding upon the' fiat `bearing surfaces 14 and the flanges 40 engaging the sides thereof to maint-ain said furnace in proper relation to said supports, so that the furnace may be tilted about said trunnions as an axis andina-y be moved in a horizontal plane.

Upon one end of the casing adjacent the` periphery thereof and on horizontall line extending through the discharge spout is a lug 42, provided with an aperture in which bolt 44 is rotatably received. A block 48 is provided with a threaded aperture to relli ceive the threaded end of bolt 44, and is positioned within the channel 16. Upon bolt t 44 adjacent to bloclr48 is mounted a roller 46 rotatable with respect to block 48 and bolt 44, and of a suitable diameter to be posi- 'tioned between the iianges of the channels 16 and engage the sides of the same, all of which is shown more particularly in Figs. 8 and 4.

The tilting mechanism comprises a chain 54, the ends of which are secured to block 48 and the intermediate portion extends over a plurality of guide rollers 56, rotatably mounted upon the support 10, and a toothed wheel 52. l/Vheel 52 is also rotatably mounted lupon the'supports 10 and is actuated by a crank arm 50 whereby movement of said crank arm rotates wheel 52 which actuates chain 54 to move block 48 along the guide 16.

In operation, when the melting is complete, crank 5() is turned in a clockwise direction which actuates the toothed wheel 52 and chain 54 to move block 48 downwardly. The downward movement of block 48 and roller 46 mounted therewith is guided by the channel4 16 in a vertical path and, since the bloclr and roller are secured to the furnace casing 9 adjacent the periphery thereof, the furnace is tilted about the trunnions 36 and moved horizontally a limited distance along the surface 14. The discharge spout being on a horizontal line through rollers 46, is, therefore, moved downwardly along a vertical path to discharging position. The horizontal movement of the rollers 38 along the surface 14 is initially towards the right and then towards the left (as seen in Fig. 1) and the limit of turning movement of the furnace is reached when the rollers 38 engage the vertical portions 15 of the supports 10, l1.

The vertical guiding of the spout has the result that'the molten metal will leave it in lll() ri eher of the -furnace onl a com aarativelY small force is required to move the furnace to its discharging position..

lv /'amicus modifications may be made in the device embodying my invention. without departing from the spirit and scope thereof and I desire, therefore, that only such limitations shall be placed thereon as are imposed by the prior art or are specifically set forth in the appended claims.

I claim as my invention: l. in a tiltable furnace, a base comprising spaced vertical members, a horizontaliy disposed bearingl surface and ay verticaiiy disposed guidingl surface formed on each of said members, a cylindrical furnace Ycasing disposed between said spaced. members, means carried by said casing on a horizontal line extending through 'the center of' gravity thereof for supporting said casing upon said horizontally disposed bearing surfaces, means carried by said casing` for engagement With said guiding surfaces, and means for tilting; said casing about the center of gravity thereof. i

2. A melting furnace comprising', a furnace casing, a support for said casing permitting the rotation and lateral movement there-- of7 apouring1 spout mounted upon said casing, and means for moving` said spout in a vertical path upon rotation of said furnace compris.- ing a stationary vertical guide andv means mounted on said casingoperatively associated with said guide. f

in testimony whereof, I havehereunto sub scribed my name January 8, 1927.

GEORG SCHMITT. 

